Adjusting mechanism for firearms



Feb. 8, 1938. M o 2,107,803

I ADJUSTING MECHANISM FOR FIREARMS Filed June 20, 1956 as y 2 Q. .26 $1211; 30 Z20 12 40 6 34 K Patented Feb. s, 1938 2,107,803

UNITED STATES PATET OFFICE ADJUSTING MECHANISM FOR FIREARNIS Miroslav Rolcik, Brunn-Husovice, Czechoslovakia, assignor to eskoslovenska Zbrojovka A. S. Brno, Brno, Czechoslovakia Application June 20, 1936, Serial No. 86,414 In Czechoslovakia June 24, 1935 11 Claims. (Cl. 74195) My invention relates to mechanism for the forming part thereof, a mechanism embodying continuous control of the speeds of two indemy invention is illustrated diagrammatically by pendent rotary movements without regard to the way of example.

direction of rotation. It has particular refer- In the drawing,

ence to the control of means for a j i g fire Fig. 1 is an axial section of the mechanism and 5 arms on the tripod or other understructure both the casing surrounding same, while Fig. 2 is a horizontally and vertically. cross section on the line II--II in Fig. 1.

It is an object of my invention to provide Referring to the drawing, I is the motor, 2 is means effecting Such adjust ent of a fire the shaft transmitting power from the motor to arm in a particularly ple and eflicient mana cogwheel 3 fixed on the motor shaft and 4 is 10 ner. another cogwheel supported in bearings 5 and As is well known to those skilled in the art the meshing with the wheel 3. This pair of cogadlusting mechanisms r efi ct g t e sighti g wheels transmits motion to the mechanisms for in correspondence with the calculated data both adjusting the fire arm in vertical and horizontal for elevation and for lateral displacement were directions. In the example shown in the draw- 15 hitherto Operated manually by means of a ing power is transmitted by means of a friction motor. Manual operation of the reversible adgear. To this end the active faces 6 and I of justing mechanisms for fire arms, whether septhe cogwheels are formed on separate plates [5, arately or simultaneously operated for horizontal H5 seated in depressions formed. in the wheels and vertical adjustment, has been found to be and acted upon by coil springs l1, projections 20 unsuitable with fire arms serving to fire on fast 48 formed on the undersides of the plates 6, 1 moving objects Manual operation requires the extending into cavities formed in the wheel bodies constant attention of the gunner and the speed to ensure the plates 6, 1 being carried along by of adjustment remains low. On the other hand the wheels. Friction discs Ill and H are in con adjusting mechanisms for fire arms, which are tact with the surfaces of plates Sand 1, respec- 25 Operated by a m r. ar uitab e n1y in connectively, and rubber rings l2 and I3 mounted on '51011 With large guns, Since y are at y inthe discs serve to create the necessary friction. volved. quite sp a y f t y p is means The discs in, H are mounted on shafts 20, 2| for reversing as required in Such a a for axial displacement and secured against rota- It is important that the gunner, when opern th r by keys 22, 23, thus carrying along 30 ating such an adjusting mechanism, be only rethe shafts, The discs I0 and ll can be shifted qu ed to co t o a s e member in Order to be to either side from their central position on the free to direct his attention solely to the obserplates 5, L vation of the object aimed at and to the firing The djusting f the discs lil, H from their proper, as only in Such case a reliable operation neutral position, independently from each other, 35 fire arm and an efiicient firing can be and therewith the simultaneous adjusting of the tamedrespective speeds for both movements and op According to the present invention I avoid the Site directions of rotation is effected by means drawbacks connected with the means for adjustf a device X bl ith the aid of a single ing fire arms as hitherto in use by driving the member 40 mechanisms for vertical as well as for horizontal This device is constituted mainly by a lever adlustment t? Smgle Sfmrce of power the supported for oscillation on the tube 25 fixed to power transmls10n p thls source to the the casing 25. The shorter arm a of this lever Justmg mechanism being effected by means of a t is forked at 38 (Fig. 2), the arms of this fork ransmission device which enables the speeds to t be controlled continuously in both directions of pmJectmg mto an annular gropve an ex disc Iii The rotation. The single components of the movesum of the hub of the fr1(.3t1n

ments are controlled simultaneously, however ini of T have? 15 formed two proJectlgns dependently from each other by means of a deformmg bearmg? 34 for Journal on Whlch Vice common to both: which comprises two is rotatably mounted a double-armed lever Y, otally connected members which are arranged in which can be Tucked normally to the plane of th form f elf-contained it i h rotation of the device X. On the short arm of nor as to enable two movements at right angles lever Y s moun ed a toot Segment 35 Which to each other to be controlled. meshes with a rack 36 formed on the extended In the drawing affixed to this specification and hub 3'! of the friction disc H. Since the rack is 55 required to rotate together with the friction disc, its teeth are formed as rings.

A longer arm of the lever Y forms the handle 38 which serves to actuate the device X. Power is transmitted from the shaft 20 to the horizontal adjusting means through the toothed wheel 40 (Fig. 2) while transmission of power from the shaft 2| for vertical adjustment is transmitted through wheel M.

If it is desired to manually adjust the gun, hand wheels 42 and 53 are mounted on the ends of the shafts 2i and 20, respectively. In the case of manual operation contact between the friction discs l0 and II and the cogwheels 3, 4, respectively, is interrupted by suitable mechanism (not shown), which temporarily forces the plates 15, Hi deeper into the depressions of the cogwheels 3, 4, respectively.

In order to adjust the gun the gunner controls the vertical and horizontal adjusting mechanisms driven by the motor I by merely rocking the handle 38 in two directions at right angles to each other. With his other hand he operates the trigger. When sighting a predetermined ob ject in accordance with the data furnished by the observer the controlling member may advantageously be combined with an adjustment device for vertical and lateral adjustment.

On the other hand, when firing at quickly moving objects observed by means of optical devices the movements of some of the parts of these devices may be transmitted by means of the power transmission device onto the controlling device X in order to simultaneously set operating the adjusting mechanisms for vertical and horizontal adjustment.

While in the embodiment shown in the draw ing and specifically described a friction drive mechanism has been illustrated, it is obvious that other kinds of power transmission with con-- tinuous speed control, such as hydraulic, electric or other power transmissions, might be used. Similarly the details of the driving and controlling devices might be altered without departing from the spirit of this invention or sacrificing the advantages resulting therefrom.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art.

I claim:-

1. A mechanism for operating the means for vertically and horizontally adjusting fire arms comprising in combination a motor, two mechanisms operatively connected with said motor for driving the adjusting devices, means inserted between said motor and said mechanisms for continuously controlling the speeds in either direction of rotation and a device operatively connected with both mechanisms for simultaneously and independently controlling the components of such motion.

2. A mechanism for operating the means for vertically and horizontally adjusting fire arms comprising in combination a motor, two mechanisms operatively connected with said motor for driving the adjusting devices, means inserted between said motor and said mechanisms for continuously controlling the speeds in either direction of rotation, said means comprising friction gearing, and a device operatively connected with both mechanisms for simultaneously and independently controlling the components of such motion.

3. A mechanism for operating the means for vertically and horizontally adjusting fire arms comprising in combination a motor, two mechanisms operatively connected with said motor for driving the adjusting devices, means inserted between said motor and said mechanisms for continuously controlling the speeds in either direction of rotation, said means comprising a pair of cog wheels operatively connected with said motor and a pair of friction discs: operatively associated with said cog wheels, and a device operatively connected with both mechanisms for simultaneously and independently controlling the components of such motion.

4. The mechanism of claim 3, in which a movable friction plate is associated with each 00%- Wheel and its respective friction discs and a spring is inserted between each wheel and plate.

5. The mechanism of claim 3, in which the controlling mechanisms comprise shafts for driving the vertical and lateral adjusting devices, said shafts carrying the friction discs for axial displacement, and further comprise means for simultaneously, but independently controlling said discs.

6. The mechanism of claim 3, in which the controlling mechanisms comprise shafts for driving the vertical and lateral adjusting devices, said shafts carrying the friction discs for axial displacement, and further comprise means for simultaneously, but independently controlling said discs, said controlling means being arranged coaxially with and rockably on one of said shafts.

'7. The mechanism of claim 3, in which the controlling mechanisms comprise shafts for driving the vertical and lateral adjusting devices I and carrying the friction discs for axial displacement, said adjusting devices comprising a lever for simultaneously, but independently controlling said discs, and a fork on said lever which fork is operatively connected with one of said discs for displacing same in one or the other direction for reversal and change of speed of rotation.

8. The mechanism of claim 3, in which the controlling mechanisms comprise shafts for driving the vertical and lateral adjusting devices, said shafts carrying the friction discs for axial displacement, said adjusting devices comprising a lever for simultaneously, but independently controlling said discs, and a fork on said lever which fork is operatively connected with one of said discs for displacing same in one or the other direction for reversal and change of speed of rotation, and a second lever oscillatable about an axis at right angles to said first lever and operatively connected with said other disc for displacement at right angles to said other disc.

9. The mechanism of claim 3, in which the controlling mechanisms comprise shafts for driving the vertical and lateral adjusting devices, said shafts carrying the friction discs for axial displacement, the adjusting devices comprising a lever rockable about one of said shafts for simultaneously, but independently controlling said discs.

10. A mechanism for operating the means for vertically and horizontally adjusting fire arms comprising in combination a motor, two mechanisms operatively connected with said motor for driving the adjusting devices, friction means inserted between said motor and said mechanisms for continuously controlling the speeds in either direction of rotation, and a double-armed lever subdivided in two parts, arranged for oscillation at right angles to each other, both parts being cogwheels operatively connected with said motor and a pair of friction discs operatively associated with said cogwheels, shafts extending at right angles to each other, each carrying one of said friction discs, a lever oscillatably mounted on one of said shafts for displacing one of said discs on the other shaft and another lever pivoted to said first lever for oscillation at right angles to it for displacing the other disc on said one shaft. Y

MIROSLAV ROLCIK. 

